Project management and engineering services within the maritime sector


Construction and conversion services available at our quayside or at your location

(under establishment)


Renewable energy and sustainable power development projects

(under establishment)

About us

Trosvik Maritime AS is a Norwegian engineering, construction and consulting company established at the Trosvik bay in Brevik and bringing forward the heritage of 100 years of expertise in modern shipbuilding.

Working worldwide within the maritime sector has always resulted in a high level of expertise throughout the value chain and project development.

The basis for success has always been the owners and employees, their commitment to the company and the product, as well as the focus on high quality and loyalty to customers and partners.

Built on a long tradition Trosvik Maritime is now focused on forward-looking green technology and products within the maritime industry, aquaculture and renewable energy, with environmentally friendly and sustainable solutions.

With our wide range of customers and partners in the green maritime industry, and being an experienced provider of engineering and production expertise, we are able to give you the service you need.

Trosvik Maritime, your future green technology partner.

Our services are:

  • Trosvik Engineering – Project management, purchasing  and engineering
  • Trosvik Verksted – Marine construction and conversion works
  • Trosvik Power & Automation – Renewable energy technology

All our services are performed in close collaboration with our clients to make you get exactly what you need.

Our services and qualities

We are committed to deliver services, expertise and quality to our customers requirements and where they require it. This has allowed us to secure a strong market position within the maritime sector and build long-lasting, knowledgeable and trusted relationships with our clients.


Marine design and Engineering

Trosvik Maritime have world leading experience and competence in LNG, battery technology, zero emission and energy optimization systems in maritime, offshore, solar, offshore wind and aquaculture industry.

We can provide concept, basic and detailed engineering packages for your conversion or retrofit projects and offer full project management services. Purchasing, onsite and commissioning services, within the maritime industry, are also part of our field of expertise.

A motivated workforce helps us to deliver reliable services to our customers.

Marine construction and conversion works

Shipbuilding and marine construction has always been the focus area at the Trosvik bay. Its facilities enables construction of large marine structures and ship conversions.  Recently we have been part of the team to build the world’s strongest anchor handling vessel.

Trosvik Verksted can deliver concept evaluation, project management and construction of modernized solutions to meet todays environmental requirements. We have quayside possibility available for conversions or short or long lay-up purposes. The quay areas are easy accessible, have controlled access and are located in protected waters which are not exposed to strong winds and weather.

Green technology development

The transition to a more environmentally cautious world includes the transition to new solutions developed on renewable energy.

Trosvik Maritime have decades of experience and competence introducing and involving the best available technology for an ever more sustainable maritime & offshore power production and consumption.

We have committed ourselves to contribute an fulfilment of UN sustainability goals throughout our operation and are part of the Grenland Technology Cluster.

Some members of our team

We are committed to deliver services, expertise and exceptional quality that our customers require.

  • Stig Martens

    Stig Martens


  • Costel Ionescu

    Costel Ionescu

    Project Engineer

  • Marcel Roumans

    Marcel Johannes Roumans

    Project Engineer

  • Geir Sæther

    Geir Kristoffersen Sæther


Stig Martens

Stig Martens


Stig has been in the industry for over 30 years and has a background as mechanical, plate and pipefitter. Last 18 years he has been involved with warehouse logistics and marine procurement coordination in several different countries like, Norway, USA, China and has been purchasing manager on 2 shipyards in Brasil.

He is also familiar with the refinery industry and DNVGL qualified for in- and external auditing.

Costel Ionescu

Costel Ionescu

Project Engineer

Costel has been working in the shipbuilding and design industry for 15 years having a multitude of roles from project engineer to project manager on a range of offshore vessels.

His qualifications and long experience as a steel & outfitting coordinator and technical coordinator makes him a key person in complex projects requiring coordination between Clients, Designer, Class and Authorities.

Marcel Roumans

Marcel Johannes Roumans

Project Engineer

Marcel is a project manager with over 20 years experience in the maritime industry. He started his shipbuilding profession in the Netherlands and has been involved with the design and engineering of a variety of vessel types.

His experience together with leadership results in a high quality project manager to new building and conversion projects for the oil gas and wind energy industry.

Geir Sæther

Geir Kristoffersen Sæther


Geir holds a Bachelor of Marine technology and has over 19 years of experience within the maritime industry with a wide range of management positions.

He has extensive leadership experience within the field of engineering and design.

Geir is one of the founders of Trosvik Maritime AS


Trosvik Maritime AS
Strømtangveien 19B
3950 Brevik, Norway

phone: +47 35 10 16 00

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